It actually isn't... It can be used properly by people mature enough to do so, I've met quite few interesting people, hooked up with old school friends, and had quite a few job opportunities arrise from meeting people through friends in the same industry.
If you want to use it get guys/girls chasing after you, or add as many applications as you can... well thats another story.
If you want to use it get guys/girls chasing after you, or add as many applications as you can... well thats another story.